import Vue from 'vue'
import Vuex from 'vuex'
import {getRequest} from "../utils/api";
import SockJS from 'sockjs-client'
import Stomp from 'stompjs'
import { Notification } from 'element-ui';

Vue.use(Vuex);

const now = new Date();

const store = new Vuex.Store({
        state:{
        routes:[],
        sessions:{},
        admins:[],
        currentAdmin:JSON.parse(window.sessionStorage.getItem('user')),
        currentSession:null,
        filterKey:'',
        stomp:null,
        isDot:{}
    },
    mutations:{
        initRoutes(state,data){
            state.routes = data;
        },
        changeCurrentSession (state,currentSession) {
            state.currentSession = currentSession;
            Vue.set(state.isDot,state.currentAdmin.username+'#'+ state.currentSession.username,false)
        },
        addMessage (state,msg) {
            let mss = state.sessions[state.currentAdmin.username+'#'+msg.to];
            if(!mss){
                //state.sessions[state.currentAdmin.username+'#'+msg.to] = [];
                Vue.set(state.sessions,state.currentAdmin.username+'#'+msg.to,[]);
            }
            state.sessions[state.currentAdmin.username+'#'+msg.to].push({
                content:msg.content,
                date: new Date(),
                self:!msg.notSelf
            })
        },
        INIT_DATA (state) {
            //浏览器历史聊天记录
            let data = localStorage.getItem('vue-chat-session');
            //console.log(data)
            if (data) {
                state.sessions = JSON.parse(data);
            }
        },
        INIT_ADMINS(state,data){
            state.admins = data;
        }
    },

    actions:{
        connect(context){
            context.state.stomp = Stomp.over(new SockJS('/ws/ep'));
            let token = window.sessionStorage.getItem('tokenStr');
            context.state.stomp.connect({'Auth-Token':token},success=>{
                context.state.stomp.subscribe('/user/queue/chat',msg=>{
                    let receiveMsg = JSON.parse(msg.body);
                    if (!context.state.currentSession ||
                        receiveMsg.from != context.state.currentSession.username){
                        Notification.info({
                            title: '['+receiveMsg.fromNickName+']发来一条消息',
                            message: receiveMsg.content.length>10?receiveMsg.content.substr(0,10):receiveMsg.content,
                            position:'bottom-right'
                        });
                        Vue.set(context.state.isDot,context.state.currentAdmin.username+'#'+receiveMsg.from,true)
                    }
                    receiveMsg.notSelf = true;
                    receiveMsg.to = receiveMsg.from;
                    context.commit('addMessage',receiveMsg)
                });
            },error=>{

            })
        },
        initData (context) {
            context.commit('INIT_DATA');
            getRequest('/chat/admin').then(resp=>{
                if (resp){
                    context.commit('INIT_ADMINS',resp);
                }
            })

        }
    }
});

store.watch(function (state) {
    return state.sessions
},function (val) {
    console.log('CHANGE: ', val);
    localStorage.setItem('vue-chat-session', JSON.stringify(val));
},{
    deep:true/*这个貌似是开启watch监测的判断,官方说明也比较模糊*/
})

export default store;
